EP 0291427 B1 19910116 - LIQUID-CRYSTAL POLYMERS WITH MESOGEN SIDE GROUPS, MADE FROM ETHYLENICALLY UNSATURATED POLYMERS, AND PROCESS FOR MAKING THEM
Title (en)
LIQUID-CRYSTAL POLYMERS WITH MESOGEN SIDE GROUPS, MADE FROM ETHYLENICALLY UNSATURATED POLYMERS, AND PROCESS FOR MAKING THEM
Publication
Application
Priority
FR 8707014 A 19870513
Abstract (en)
[origin: EP0291427A1] The present invention relates to liquid crystal polymers bearing side mesogenic groups of formula: <IMAGE> in which: X = H, OH, COOH, NH2; R1, R2 and R3 = H, Cl or CH3; R4 and R5 = hydrocarbon radical; M = mesogenic group; the sum n + m + p is between 10 and 20,000; x is a number ranging from 0 to 8. The present invention also relates to a process for the preparation of these polymers, according to which mesogenic groups are grafted onto at least a proportion of the pendant vinyl unsaturations of a polymer which may be a telechelic polybutadiene by means of a (bromoalkyl)diorganosilane. These liquid crystal polymers can be employed especially for the production of solid optical components.
IPC 1-7
IPC 8 full level
C08C 19/00 (2006.01); C08C 19/25 (2006.01); C08F 8/00 (2006.01); C08F 8/42 (2006.01); C09K 19/40 (2006.01)
CPC (source: EP)
C08C 19/25 (2013.01); C09K 19/408 (2013.01)
Designated contracting state (EPC)
AT BE CH DE ES FR GB IT LI LU NL SE
DOCDB simple family (publication)
EP 0291427 A1 19881117; EP 0291427 B1 19910116; AT E60079 T1 19910215; BR 8802314 A 19881213; DE 3861547 D1 19910221; ES 2019996 B3 19910716; FR 2615193 A1 19881118; FR 2615193 B1 19891208; JP S63301204 A 19881208; PT 87471 A 19890531; PT 87471 B 19920930
DOCDB simple family (application)
EP 88420154 A 19880509; AT 88420154 T 19880509; BR 8802314 A 19880512; DE 3861547 T 19880509; ES 88420154 T 19880509; FR 8707014 A 19870513; JP 11370288 A 19880512; PT 8747188 A 19880512